#include <stdio.h>
#include "add.h"
#include "io.h"

#define X1 20
#define X2 30

int main(void)
{
	int x, y, z;
	
	x = X1;
	y = X2;
	
	x = input();
	y = input();

	z = add2(x, y);	
	printf ("addition is : %d\n", z);
	
	return 0;
}
